Main
Denis Ostroushko
Relevant Experience
Graduate Research Assistant
University of Minnesota, Division of Biostatistics and
Health Data Science
Minneapolis, MN
Present - August 2023
Master’s Thesis
- Collaborated with Dr. Julian Wolfson to evaluate the impact of cohort definition on the analysis of progression time and rates to Alzheimer’s Disease (AD).
- Leveraged data from the Fairview Health System to conduct a sensitivity analysis study of cohort definitions. Suggested inclusion criteria resulting in robust data and maximized sample size.
Data Integration Predictive Methods for AD Identification
- Leveraged regression and machine learning methods to develop a pipeline to identity variables most associated with AD presence.
- Generalized results to multiple -omics data sources, used novel ML methods for integrated data analysis to improve accuracy of predictions by 17% for at-risk of AD population
Medica
Healthcare Analyst II (2021-2023)
Minneapolis, MN
August 2023 - June 2019
- Collaborated with business owners to assess member assistance programs. Used statistical models and simulations to understand cost savings distribution. Developed a strategy, resulting in an additional $1,000,000 annualized savings.
- Collaborated with member identification team to improve risk models for hospital readmission. Developed a set of predictive models. Best classifier improved AUC score by 15%.
Healthcare Analyst I (2019-2021)
- Automated actuarial completion factors model using SAS. Improved estimation granularity, reduced prediction error by 35%. Reduced delivery time for the final product.
- Led the introduction of benchmarks from Milliman proprietary software. Improved identification of cost savings opportunities and increased strategy transparency.
Research Assistant
Truckers & Turnover Research Project
Morris, MN
2019 - 2018
- Managed scripts to produce publication materials. Presented results of medical cost analysis for truck drivers with OSA as a poster. Helped develop a bootstrap simulation to estimate variance of cost differences.
Education
University of Minnesota School of Public Health
MS Biostatistics
Minneapolis, MN
Expected 2024 - 2022
University of Minnesota - Morris
BA Mathematics, Statistics (Double Major)
Morris, MN
2019 - 2015